Wait just a moment . .

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Description: In specifying electric motor requirements, "momentary" wording crops up in several contexts. Depending upon the drive inertia and the retarding torque exhibited by the driven machine, an abrupt restoration of line voltage while the motor is coasting can amount to an "out-of-phase reclosure" that can snap the shaft or tear up the stator winding. Another use of the term momentary relates to dielectric testing of insulation components. Actual test duration may be 10, 15, or 30 seconds, or some other figure.
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